Physical & Chemical Properties

Physical & Chemical PropertiesDefinitions of PropertiesPhysical properties can be observed without chemically changing matter.Chemical properties describe how a substance interacts with other substances. Properties that change the chemical composition of a substanceExamples of PropertiesPHYSICALCHEMICALColorOdorPhaseLusterShapeMalleabilityDuctilityDensityShapesolubilityReactivityCombustibilityFlammabilityRustingTarnishingCorrodingAcidityOxidationConductivityPROPERTIESIntensive A property that does not change when the amount of sample changes.density, pressure, temperature, color. Extensive A property that changes when the amount of matter in a sample changes.mass, volume, length, and chargePropertiesMassAnything that takes up space and remains constant regardless of locationWeightForce that measure the pull on a given mass by gravity; dependent on locationVolumeLxWxHChanges with temperature

EXAMPLE

Mass of water100.0 g10.0 gVolume of water0.100 L0.010 LTemperature of water25 C25 CDensity of water1.00 g/mL1.00 g/mLSPECIFIC GRAVITYSpecific Gravity: has no units!!

Specific gravity is the density of a substance relative to some reference substance: ( usually compared to water.Specific gravity = density of substancedensity of reference substance